This is what happens when you neither pay attention or altogether skip your physics classes. The only success these free energy guys can claim for themselves is their self deception.
Most of these guys actually believe they achieved or close to achieving something big. The truth is, they don't have the faintest idea about the impossibility of the thing they are trying to accomplish. But nobody can tell them otherwise. They think they are smarter than anyone else.
These free energy (from nothing) nonsense has been going on for at least a millenia, and nothing tangible has ever come out of it.